Question

find the sum of first 10 terms of the ap 4 ,7,10​

Answer 1

Answer:

175

Step-by-step explanation:

As per the question,

a=4,

d=7-4=3

n=10

S10= n/2[2a+(n-1)d]

= 10/2[2×4+(10-1)3]

= 5[8+9×3]

=5×35

=175

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Answer 2

Answer:

find the sum of first 15 terms of the ap 4 ,7,10